Typewriting machine



March 24, 1925.

E. s. DODGE TYPEWRITING momma Filed Jun 2, 1925 2 Sheets-Sheet 1INVENTDR @MM. ev 3% A? HIP; ATTORNEY WITNEEEEE March 24, 1925.

E. s. DODGE TYPEWRITING KACHINE Filed June 2, 1923 2 Shoets$heet 2INVENTDR filth/.4 d

9M A} HIE ATTURNEY WITNESSES Patented Mar. 24, 1925.

UNITED STATES PATENT OFFICE.

ELBERT S. DODGE, OF ILION, NEW YORK. ASSIGNOIR- TO REMINGTON T'YPEWRITERCOMPANY, OF ILION, NEW YORK A CORPORATION OF NEW YORK.

TYPEWRITIN G MACHINE.

Application filed June 2,

To all whom it may concern:

Be it known that I, ELBERT Donon, a citizen of the United States. andresident of Ilion, in the county of llerkinier and State of New York,have invented certain new and useful Improvements in TypewritingMachines, of which the following is a specification.

My invention relates to typewriting machines, and more particularly totabulator mechanism.

The main object of the invention, generally stat-ed, to provide simple,strong and efficient tabulator mechanism.

Another object of my invention is to provide a simple, strong andefficient single key tabulator which may, when desired, be readilyembodied in standard Remington machines as a substitute for thetabulator mechanisms now employed therein without material modificationof such machine except such as are effected by the substitution of onecharacter of tabulator for another.

Still another object of my invention to 25 provide strong and reliablemechanism for preventing a rebound of the carriage when it is arrestedby its tabulator stops.

To the above and'other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth in the following description andparticularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicatecorresponding parts in the various views,

Figure 1 is a fragmentary fore-and-aft vertical sectional view of atypewriting ma chine embodying my invention.

Figure 2 is a detail front elevation of a portion ofthe tabulatormechanism and some of the associated parts.

Figure 3 is a fragmentary detail top plan view, with parts in section,of the key controlled means by which the tabulator is actuated.

Figure 4 is a detail fragmentary top plan view of the key actuated stopand some of the associated parts; the view showing the parts in actuatedposition with the cover plate of the housing removed. a

l have shown my invention in the present instance embodied in a standardRemington 1923. Serial No. 642,891.

machine, but have illustrated only so much of said machine as isnecessary to arrive at an understanding of my invention in itsembodiment therein. While the invention may be readily incorporated asasnbstitute for the tabulator mechanism, either column or decimalselectors, now employed in such machines, it should be understood thatthe in vention is not restricted to its use therein but may beemployedin typewriting or like machines generally and wherever foundavailable. l

The frame of thevmachine comprises a base 10, corner post-s ll'and topplate .12.

A power driven cairriage 13 of the usual construction is lllOllllliGl:011 rollers, including the rollers -14,tcitravel'over the top platefrom side to si ofthe machine. Ex tending rearwardly ron and fixed tothe carriage are bracket arms-'15, which support the usual column stop'bar. 16 on which column stops 17 are mounted; The column stopsin thepresent instance are situated atletter Space intervals on the stop barand may be shifted,

individually rearwardly on the bar from the inoperative position,indicated by the forcmost stop 17 in Fig. 1, to the operative position,indicated by the stop in the rear thereof in this View.

A feed rack 18 is mounted on the carriage in the usual manner,beingcarried on arms 19 pivoted at 20 on the carriage. The feed rack isnormally" s1 fling pressed down into effective position vuere it engagesa feed pinion 21. The feed pinion is mounted on a shaft (not shown)supported. in a bracket 22 fixedly supported above, the top plate of themachine. Said shaft is operatively connected at its rear end to anescapement wheel 23, controlled in the usual manner to afford astep-bv-step letter feed movement of the feed pinion 21 and the carriagecontrolled thereby.

In the usual standard Remington machines the carriage is releasedat'each tabulating operation by the combined carriage release andretarding device constructed and operated as follows:

A sheet metal frame 24 is pivoted at 25 to swing on a bracket 26 securedto the top plate of the machine. This frame 21% has a portion 27 formedwith bearing openings to receive a shaft 28 that is adapted to turntherein. The forward end of this shaft carries a pinion 29, and the rearend thereof is connected in the usual manner with a member of aretarding device that turns in a body of shot contained within a drumsecured to the frame 24 by screws 31. The frame 24 is pivotallyconnected at 32 to a depending link 33 that has its lower end pivoted at34 to a crank arm 35 fixed on a rock shaft 36. This rock shaft ismounted at its ends in brackets 37 secured by bolts 38 and nuts 39 tothe base 10 of the machine. The crank arm 35 is also pivotally connectedat 40- to a forwardly extending link 41 pivoted at its forward end, asindicated at 42, to a depending car 43 on a universal release bar 44. Asecond link 41 is connected in alike manner at its forward end to theuniversal release bar near the lefthand end thereof; the rear end of thelink being connected to a second depending crank arm 35 on the left-handend of the rock shaft 36. Said release bar is provided with upturnedends 45 pivoted on across bar 46 supported at its ends in the base ofthe machine. A contractile spring 47 is connected at one end to theuniversal release bar and at its other end to a key stem guide 48, toreturn the universal bar and the parts connected there with to normalposition.

In standard Remington machines a series of key controlled angular levers49 are mounted to turn on the cross bar or pivot rod 46. The rear edgesof the depending arms 50 of said levers coact with the forward edge ofthe universal release bar to actuate it, and thereby swing the frame 24and release the feed rack from its pinion; at the same time connectingthe retarding device with the feed rack to retard the free movement ofthe carriage.

In said standard Remin ton machines each lever 49 is connected with akey stem 51.1novable vertically in guide openings 52 and 53 in guides 54and 48 respectively; each key stem being provided with a tabu lator keyat the upper end thereof. Moreover, in such construction, the dependingarm 50 of each lever 49 is connected with a rearwardly extending link,that in turn is connected at its rear end to a tabulator lever carriedin a tabulator frame for controlling a tabulator stop. In the resentconstruction I eliminate the usual ta ulator frame, the tabulatorlevers, the stops controlled thereby and the link connections betweenthe levers 49 and the tabulator levers. Moreover, I use but two of thewidely separated levers 49 of the usual series. These two levers aremaintained properly positioned and spaced apart onthe rod 46 y collars55 held on the rod by set screws 56. The key stems'51 connected to saidlevers are united at their upper ends by a single wide tabulator key 57arranged in the rear of thelast row of printing keys 58 in the keyboard.

As far as has been described, an actuation of the tabulator key merelyactuates the combined carriage releasing and retarding device to freethe carriage from control of its escapement mechanism. In accordancewith my present invention I utilize the actuation of the releasingdevice to transmit motion to the tabulator stop, and to the anti-rebounddetent ofmy invention, now about to be described.

It will be seen that the frame 24 is provided with an upwardly extendingear 59 in which is received the forward bent end of a connecting link60; the rear bent end of this link extending through an opening 61 in acrank arm 62. This crank arm has its hub fixed to a rock shaft 63, thearm extending downwardly from said shaft and controlling its rockingmovement. The shaft receives its support in bearing openings in aspecial casting, housing or tabulator frame 64, and is held againstendwise displacement in said bearings by collars 63 held on the shaft byscrews and coacting with the inner side walls of the housing. Thehousing 64 is secured by screws 64 to a top plate of the machine and hasa cover plate 65 detachably secured thereto by screws 66. Containedwithin the housing 64, and fixed to the rock shaft 63, is an upwardlyprojecting crank arm 67 rounded at its upper end, as indicated at 68 inFig. 1. This arm is returned to and normally held in the Fig. 1 positionby a spring 69. The upper rounded end of the arm 67 is seated in thebearing slot 70 in a slide or stop carrier 71. In the present instancethis member 71 is in the nature of a block mounted in a depression 72 inthe upper side of the housing beneath the cover plate 65. The member 71is guided by the walls of said depression for horizontal slidingmovement fore-and-aft of the machine from the Fig. l to the Fig. 2position. The upper side of the member 71 has a transversely extendingdepression 73 therein in which is received a transversely extending stopbar 74. Said bar is fixed at its ends by screws 75 in depressions in.the upper face of the housing eneath the cover plate 65. This bar coactswith the rear and front walls respectively of the depression 73 to limitthe fore-and-aft sliding movements of the member 71.

The member 71 is provided with an integral forwardly projectingtabulator stop 76 formed with a right-handflat face with which anoperative column stop 17 is adaptad to co-act to arrest the travel ofthe carriage in its movement from right to left, as will hereinaftermore clearly appear. The slide member, block or slide 78, that is guidedin its fore-and-aft movement independently of the slide 71 by the wallsof said cutout. The slide 78 is provided with a transversely extendingdepression 79 in the upper s de thereof which is adapted to register.with the depression 73 in the slide 71. The stop bar 74 extends throughthe depression 79, although a separate stop pin 80 is carried by theslide 78 to coact with the slide 71, and thereby limit the forwardmovement of the slide 78 relatively to the member 71. The forward edgeof the slide 78 is beveled or inclined rearwardly from left to right, asindicated at 81 in Fig. 4. The left-hand end of the beveled edgeterminates in an abrupt 'rearwardly extending engaging face 82 adaptedto be projected behind, or to the right of, a column stop 17, as shownin Fig.

,4. In this position the detent prevents a rebound of the carriage asthe stop 17 coacts with the key controlled tabulator stop 76.

.A coiled expansion spring 83 bears at one end against the slide 71 andat its other end against the slide 78, to normally maintain said slide78 in the position shown in full lines in Fig. 4, relatively to theslide 71.

In actuating the tabulator the operator depresses the key 57, therebytransmitti g a swinging motion to the frame 24 WlllCl is effective torelease the carriage. The swinging motion of the frame also actuates therock shaft 63 through the link 60. The rocking motion of the shaftshifts the arm 67'and slides the member 71 forward to bring the stop 76thereon into the path of the operative column stop 17. The anti-rebounddetent member 78 at this time moves forward with the member 71 tothefull line position in Fig. 4. The carriage having been released willadvance to the left carrying the rear edge of the first operative columnstop 17 into contact with the bevel 81 on the 'member 78. As thecarriage advances shown in this figure, the force of the spring 83 iseffective to snap the detent forward to the full line position, therebybringing the stop face 82 on the detent behind the arrested column stop17. The arrest of the carriage having been thus effected the tabulatorkey 57 is released and the springs 47 and'69 are effective to return thekey 57 and the parts controlled thereby to normal position. Thisre-establishes connection between the feed rack 18 and the feed pimon21, and

carries the detent members 78 back with the sllde 71, withdrawing theparts 76 and '82 from engagement with the coacting column stop 17. a

t will be observed that by my invention I have provided a simple, strongand effective tabulator and anti-rebound construction'that may bereadily embodied in standard Remington machines without materialmodification of said machines, except to substitute devices of myinvention for those now in use. It will be understood, .moreover, that Ihave utilized parts that are now embodied in such machines to coact in anovel manner with the devices I have substituted for those ordinarilyused. It will be seen, therefore, that the tabulator mechanism of thepresent invention. may be readily'employed, when desired, as asubstitute for the ordinary constructions, at comparatively small -cost.

What I claim as new and desire to secure by Letters Patent: I 1. In atypewriting machine, the combination of a carriage, acolumn stop carriedthereby, a. key controlled sliding block 2. In a typewriting machine,the combination of a carriage, a series of adjustable column stopscarried thereby, a key controlled combined carriage releasing andcarriage retarding device including a swinging frame controlled by saidkey, a slidin carrier connected with and moved by sai swinging frame, asingle tabulator stop carried by said carrier and projected by thesliding movement of the latter into the path of said column stops, and aspring pressed anti-rebound detent mounted for sliding movement on saidcarrier.

3. In a typewriting machine, the combination of a tabulator ke arrangedat the rear of the keyboard of tlie machine, a pair of angular leversactuated by said key, a universal carriage release bar with which saidangular levers coact, a carriage releasing device actuated by saiduniversal release bar,

a tabulator stop operatively connected to said releasing device andprojected thereby to operative position, and a carriage carried columnstop coacting with said tabulator stop.

4. In a typewritlng mach ne, the combina tion of a tabulator ke arrangedat the rear of the keyboard of t e machine, a pair of angular leversactuated by said key, a universal carriage release bar with whichsaidangular levers coact, a carriage releasing device actuated by saiduniversal release bar and comprising a swinging frame, a rock shaft, alink connecting said swinging frame and rock shaft, a tabulator stopcontrolled by said rock shaft, and a co-operative carnage carried columnstop.

5. In a typewriting machine, the combination of a carriage, a columnstop carried thereby, a key, a carriage releasing device including aswinging frame controlled by said key, a rock shaft controlled by saidframe, a slide controlled by said rock shaft, and a tabulator stop onsaid slide and cooperative with said column stop.

6. In a typewriting machine, the combination of a carriage, a columnstop carried thereby, a key, a carriage releasing device including aswingingt frame controlled by said key, a rock sha a link between saidframe and shaft to effect an actuation of said shaft by the frame, acrank arm on said shaft, a sliding carrier controlled by said crank arm,and a tabulator stop formed as a part of said carrier and cooperativewith said column stop.

7. In a typewriting machine, the combination of a carriage, a columnstop carried thereby, a key, a carriage releasing device including amovable frame controlled by said key, a rock shaft controlled by saidframe, a crank arm on said shaft, a sliding carrier controlled by saidcrank arm, a tabulator stop carried by the carrier and cooperative withsaid column stop, and an antirebound detent, carried by and adapted toslide relatively to said carrier and to engage behind said column stopwhen the latter is arrested by the tabulator stop.

8. In a typewriting machine, the combinathereby, a key, a combinedcarriage releasing v and retarding device including a swin 'n framecontrolled by said key, a rock s a t.

controlled by said swin ing frame, a crank arm on said shaft, a sli ingcarrier engaged and controlled by said crank arm, an integral tabulatorstop carried by the carrier and co-operative' with said column stop,'anda s ring pressed anti-rebound detent carrie by and adapted to sliderelatively to said carrier and to engage behind said column stop'whenthe latter is arrested by the tabulator stop.

9. In a typewriting machine, the combination of a tabulator ke arrangedat the rear of thekeyboard of the machine, a pair of angular leversactuated by said key, a universa-l carriage release bar with which saidangular levers coact, a combined carriage releasing and retarding deviceincluding a swinging frame controlled by said universal release bar, atabulator frame, a rock shaft mounted in said frame, a crank arm on saidshaft and by which it is actuated, a link connecting said crank arm andswinging frame to rock the shaft by said frame, a second crank arm onsaid shaft, a slide mounted in the tabulator frame and with which saidsecond arm on the rock shaft coacts to move.

the slide to operative position, a tabulator stop on said slide whichcoacts with said column stop, and a spring pressed antirebound detentcarried by said slide and-

